[rules-users] Internal type used together with function throws ClassCastException

[Michal Bali]

Hi Edson,

I used the last successful build from your CI which is form 9. March. I've
tried it on the trunk and it works fine. Thank you!

Best Regards,
Michal


2009/3/16 Edson Tirelli <tirelli at post.com>

>
>    Michal,
>
>    Are you using trunk or CR1?
>
>    I found a bug last Saturday that I believe is the exact same one you
> found here. Mark fixed it on trunk. So, if you are not using trunk, can you
> do it and let us know if it is working for you?
>
>    Thanks,
>       Edson
>
> 2009/3/16 Michal Bali <michalbali at gmail.com>
>
>> Hi,
>>
>> Internal type together with a function in one drl file cause
>> ClassCastException when setting properties of a new instance of this type.
>>
>> java.lang.ClassCastException: org.drools.generatedbeans.Cheese cannot be
>> cast to org.drools.generatedbeans.Cheese
>>     at
>> org.drools.base.org.drools.generatedbeans.Cheese6778431$setType.setValue(Unknown
>> Source)
>>     at
>> org.drools.base.ClassFieldWriter.setValue(ClassFieldWriter.java:195)
>>     at
>> org.drools.base.ClassFieldAccessor.setValue(ClassFieldAccessor.java:319)
>>     at org.drools.factmodel.ClassDefinition.set(ClassDefinition.java:207)
>>     at
>> org.drools.integrationtests.MiscTest.testGeneratedBeansWithFunction(MiscTest.java:1072)
>>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>     at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>     at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>     at java.lang.reflect.Method.invoke(Method.java:616)
>>     at junit.framework.TestCase.runTest(TestCase.java:154)
>>     at junit.framework.TestCase.runBare(TestCase.java:127)
>>     at junit.framework.TestResult$1.protect(TestResult.java:106)
>>     at junit.framework.TestResult.runProtected(TestResult.java:124)
>>     at junit.framework.TestResult.run(TestResult.java:109)
>>     at junit.framework.TestCase.run(TestCase.java:118)
>>     at
>> org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
>>     at
>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>>     at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
>>     at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
>>     at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
>>     at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
>>
>>
>> Test case to reproduce:
>> test_GeneratedBeansWithFunction.drl:
>> -------------------------------
>> package org.drools.generatedbeans;
>>
>> function void someFunction(String arg) {
>>     System.out.println("hello");
>> }
>>
>> declare Cheese
>>     type: String
>> end
>> -------------------------------
>>
>> test method:
>> public void testGeneratedBeansWithFunction() throws Exception {
>>         final KnowledgeBuilder kbuilder =
>> KnowledgeBuilderFactory.newKnowledgeBuilder();
>>         kbuilder.add( ResourceFactory.newInputStreamResource(
>> getClass().getResourceAsStream( "test_GeneratedBeansWithFunction.drl" ) ),
>>                       ResourceType.DRL );
>>         assertFalse( kbuilder.getErrors().toString(),
>>                      kbuilder.hasErrors() );
>>
>>         KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
>>         kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
>>
>>         // Retrieve the generated fact type
>>         FactType cheeseFact = kbase.getFactType(
>> "org.drools.generatedbeans",
>>                                                  "Cheese" );
>>
>>         // Create a new Fact instance
>>         Object cheese = cheeseFact.newInstance();
>>
>>         cheeseFact.set( cheese,
>>                         "type",
>>                         "stilton" );
>>     }
>>
>> The last line throws the ClassCastException. If we remove the function
>> from the drl file all works fine.
>> Best Regards,
>> Michal
>>
>> _______________________________________________
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>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
>
> --
>  Edson Tirelli
>  JBoss Drools Core Development
>  JBoss, a division of Red Hat @ www.jboss.com
>
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